I also think its 4 but im not sure
we know that
The internal angles of the triangle
are
Angles



The internal angles of the triangle
are
Angles



therefore
the answer is

Answer:
{x∈R |
, x∉Z}
Step-by-step explanation:
Given the function y=3tan(2/3x)
We know that tangent is a function that's continuous within it's domain but not continuous on all real numbers
Also, the roots of y=3tan(2/3x) is
where n is an integer
Note that the domain of the function cannot be within 
Therefore, {x∈R |
, x∉Z}
Answer:
5
Step-by-step explanation:
we take the 5 behind the four and it rounds up to a 5
4.5=5
13 and 14 becuase 13 being the third largest and 14 being the second largest